NICOLAI FELLA, AN MC who’s part of the Bogotá collective LosPetitFellas, has long incorporated blues, funk, and other experimental sounds into his music — but rap has always been the cornerstone.
MEDELLÍN —A boombox blasts a beat as a few young rappers pass around the mic, taking turns freestyling verses in the community center’s patio. Behind them, a giant mural depicts a single surviving ...